
\setlength{\tabcolsep}{6pt} \renewcommand{\arraystretch}{1} \footnotesize

\begin{tabular}{l*{9}{c}}\hline  &  Treatment on mediator & Outcome-mediator & Share explained\\ \hline

\hline {\textit{Mean index of Political efficacy}  & 0.26***  & 0.28**   & 0.34*  \\
       & [0.08]   & [0.11] & [0.18]   \\
       & (       0.071,       0.326 )   & (       0.040,       0.428 )  & (       0.038,       0.611 )    \\

\hline {\textit{Mean index of Liberal Orientations}  & 0.00  & 0.10   & 0.00  \\
       & [0.08]   & [0.10] & [0.04]   \\
       & (      -0.072,       0.152 )   & (      -0.061,       0.293 )  & (      -0.055,       0.086 )    \\

\hline {\textit{Mean index of Coordination}  & 0.29**  & 0.11   & 0.14  \\
       & [0.11]   & [0.09] & [0.13]   \\
       & (       0.077,       0.432 )   & (      -0.021,       0.266 )  & (      -0.023,       0.394 )    \\

\hline

\hline \end{tabular}
